Ladies, if you want to preserve your honor in a roomful of drunken men, maintain consciousness. Or choose a better grade of drunken men BEFORE you party.
Blackouts leave one functional and appearing "normal'. We had a case where a young female Airman came out of a blackout while having sex and she freaked and then pressed rape charges. The young man was fortunate that she had a history of drinking and blacking out and becoming a real sex machine - she usually stayed blacked out and didn't remember the "fun" she had the night before. The case was dropped as it should have been.